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Newly exported from Text.Pandoc.Lua:
- `runFilterFile` to run a Lua filter from file;
- data type `Global` and its constructors; and
- `setGlobals` to add globals to a Lua environment.
This module also contains `Pushable` and `Peekable` instances required
to get pandoc's data types to and from Lua. Low-level Lua operation
remain hidden in Text.Pandoc.Lua.
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A proper Lua traceback is added if either loading of a file or execution
of a filter function fails. This should be of help to authors of Lua
filters who need to debug their code.
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This seems to be necessary if we are to use our custom Prelude
with ghci.
Closes #4464.
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Provide more context about the task which caused an error.
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The function `global_filter` was used internally to get the implicitly
defined global filter. It was of little value to end-users, but caused
unnecessary code duplication in pandoc. The function has hence been
dropped. Internally, the global filter is now received by interpreting
the global table as lua filter.
This is a Lua API change.
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Refactored some code from Text.Pandoc.Lua.PandocModule
into new internal module Text.Pandoc.Lua.Filter.
Add `walk_inline` and `walk_block` in pandoc lua module.
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